Skip to main content

We are experiencing higher volumes of enquiries at the moment related to successive significant rainfall events in January and February. We are working hard to reply to these enquiries while at the same time planning and undertaking work to remove debris dams and blockages, and remediate impacted areas.

Close alert

Groundwater field investigations over the 2014-15 summer in support of the Healthy Rivers project

TR 2018/32

Report: TR 2018/32

Author: John Hadfield

About this report

This report was commissioned by the Technical Leaders Group for the Healthy Rivers Wai Ora Project Report No. HR/TLG/2015-2016/1.5B

This report describes short-term groundwater related field investigations undertaken in the summer of 2014-15 in support of the Healthy Rivers Project (Waiora He Rautaki Whakapaipai).

Read or download the report

Groundwater field investigations over the 2014-15 summer in support of the Healthy Rivers project [PDF, 4.1 MB]

Contents
1 Introduction
1.1 Background
1.2 Work brief
1.3 Approach
2 Flow confirmation survey
2.1 Method
2.2 Data obtained
3 Low flow gauging
3.1 Method
3.2 Data obtained
4 Well information surveys
4.1 Method
4.2 Results
5 Groundwater chemistry
5.1 Method
5.2 Results
6 Groundwater level surveying
6.1 Method
6.2 Results
7 Investigation of redox conditions
7.1 Method
7.2 Results
8 Radon
8.1 Method
8.2 Results
9 Water age
9.1 Method
9.2 Results